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} .icla li a { color: #000; } .icla li a:hover { color: #1071bb; } .icla li.last { background: url(/images/bg11.png) no-repeat left top } </style> <div style=" margin-bottom:40px;"><img src="/images/205.jpg" alt="全国定制咨询热线" width="250px" /><h2 style=" text-align:center; font-size:20px;">联系电话åQ?8561633448</h2></div> </div> </div> <div class="contmin"> <div class="content-top ofl"> <h2>常见问答</h2> <p>当前位置ã€?a href="/index.php" >首页</a>》常见问½{?/p> </div> <!-- /content-top --> <div style=" padding-top:30px;"> <div style=" padding-bottom:10px; border-bottom:1px solid #99CC99;"> <h2 style="font-size:20px; text-align:center;">水处理中的污水除¼‚?/h2> <h5 style="margin-top:10px; text-align:center;"> 发布旉™—´åQ?017-08-08</h5> </div> <div style=" margin:20px 0"> <div>  <div> 1.工艺原理及过½E?/div> <div>  </div> <div> 污水¾lè¿‡ç”Ÿç‰©æ³•å¤„理后åQŒå¤§éƒ¨åˆ†çš„有机磷酸盐和聚¼‚·é…¸ç›è¢«è½¬åŒ–为溶解性的正磷酸盐åQŒå°‘量不溶性的¼‚äh˜¯å­˜åœ¨äºŽç”Ÿç‰©ç»†èƒžçš„原生质中。常规的生物处理法通过剩余污惔排放和处理可以从污水中去除部分磷åQ?0%~ [#]0%)åQŒä¸€äº›ç‰¹ŒDŠå·¥è‰ºæˆ–¾lè¿‡è°ƒæ•´˜qè¡Œæ–¹å¼å…ähœ‰é™¤ç£·åŠŸèƒ½çš„普通工艺可以取得较好的除磷效果。但生物处理法的除磷效果是有限的åQŒå½“¼‚ïLš„排放标准要求很高æ—Óž¼Œå¾€å¾€éœ€è¦ä‹É用化学除¼‚ähˆ–ž®†ç”Ÿç‰©æ³•ä¸ŽåŒ–学除¼‚ïL»“合è“v来ä‹É用ã€?/div> <div> 化学法除¼‚äh˜¯å‘水中投加石灰、铝盐和铁盐½{‰åŒ–学药剂,生成不溶性的¼‚·é…¸ç›ï¼Œç„¶åŽå†åˆ©ç”¨æ²‰æ·€ã€æ°”‹¹®æˆ–˜q‡æ×o½{‰æ–¹æ³•å°†¼‚·ä»Žæ±¡æ°´ä¸­é™¤åŽ…R€‚按照磷的最¾lˆåŽ»é™¤æ–¹å¼å’Œæž„筑物的¾l„成åQŒæ´»æ€§æ±¡æ³¥æ³•é™¤ç£·å·¥è‰º‹¹ç¨‹å¯åˆ†ä¸ÞZ¸»‹¹ç¨‹é™¤ç£·å·¥è‰ºå’Œä¾§‹¹ç¨‹é™¤ç£·å·¥è‰ºä¸¤ç±»ã€?/div> <div> 侧流除磷工艺的厌氧段不在处理污水的水‹¹æ–¹å‘上åQŒè€Œæ˜¯åœ¨å›ž‹¹æ±¡æ³¥çš„侧流上,具体æ–ÒŽ³•æ˜¯å°†éƒ¨åˆ†å«ç£·å›žæµæ±¡æƒ”分流到厌氧段释放¼‚øP¼Œå†ç”¨çŸ³ç°æ²‰æ·€åŽ»é™¤å¯Œç£·ä¸Šæ¸…液中的磷。主‹¹é™¤¼‚·å·¥è‰ºçš„厌氧ŒDµåœ¨å¤„理污水的水‹¹æ–¹å‘上åQŒç£·çš„最¾lˆåŽ»é™¤é€šè¿‡å‰©ä½™æ±¡æƒ”排放åQŒå…¶ä»£è¡¨æ–ÒŽ³•æ˜¯åŽŒæ°?好氧åQˆA/0)工艺åQŒå…¶ä»–方法也都是¾lè¿‡åŽŒæ°§/好氧˜q‡ç¨‹å’ŒæŽ’出剩余污泥来实现除磷ã€?/div> <div> 侧流除磷工艺又称Phostrip工艺åQŒå…¶å·¥è‰º‹¹ç¨‹è§å›¾5-9ã€?/div> <div> 污水¾lè¿‡æ›æ°”池处理去除B0D5和CODc同时‹zÀL€§æ±¡æ³¥è¿‡é‡æ‘„取磷后,混合液再˜q›äh二沉池,实现含磷污惔与水的分¼›…R€‚含¼‚äh±¡æ³¥éƒ¨åˆ†å›ž‹¹èŽ‰æ›æ°”池,另一部分分流臛_ŽŒæ°§é™¤¼‚äh± ã€‚在厌氧除磷池中åQŒæ±¡æ³¥åœ¨å¥½æ°§æ¡äšg时过量摄取的¼‚·å¾—到充分释放,然后污惔回流到曝气池中。由除磷池流出的富磷上清液进人化学沉淀池,投加石灰形成Ca3(P04)2不溶物沉淀åQŒåœ¨é€šè¿‡æŽ’放含磷污惔去除¼‚—÷€?/div> <div> Phostrip工艺ž®†ç”Ÿç‰©é™¤¼‚äh³•ä¸ŽåŒ–学除¼‚äh³•¾l“合在一èµøP¼Œé™¤ç£·æ•ˆæžœè¾ƒå¥½ä¸”稳定,出水æ€È£·‹¹“度可以ž®äºŽlmg/L,而且操作灉|´»åQŒå—外界条äšg影响ž®ã€‚现有常规活性污泥法很容易改造成Phostrip工艺åQŒåªéœ€åœ¨æ±¡æ³¥å›ž‹¹ç®¡¾U¿ä¸Šå¢žåŠ ž®è§„模的处理单元卛_¯åQŒè€Œä¸”在改造过½E‹ä¸­ä¸ç”¨ä¸­æ–­æ±¡æ°´å¤„理¾pȝ»Ÿçš„正常运转。污泥在释磷池内的停留时间一般äؓ2håQŒä»Žæ±¡æƒ”回流¾pȝ»Ÿåˆ†æµçš„污泥量一般äؓ污水处理厂进水量çš?0%~30%,而经˜q‡æµ“¾~©é‡Š¼‚·åŽå†å›ž‹¹åˆ°æ›æ°”池内的惔量äؓ污水处理厂进水量çš?0%~20%ã€?/div> <div>  </div> <div> 2.影响因素</div> <div>  </div> <div> (1)溶解氧:首先必须在厌氧区控制严格的厌氧环境,˜q™ç›´æŽ¥å…³¾pÕdˆ°èšç£·èŒçš„生长状况、释¼‚¯‚ƒ½åŠ›åŠåˆ©ç”¨æœ‰æœºåŸø™´¨çš„能力。厌氧区DO的存在,一斚w¢ä¼šå› DOž®†ä½œä¸ºæœ€¾lˆç”µå­å—体而抑制厌氧菌的发酵äñ”é…怽œç”¨ï¼Œå¦¨ç¢¼‚ïLš„释放åQ›å¦ä¸€æ–šw¢ä¼šå¿«é€Ÿè€—尽有机åŸø™´¨åQŒä»Žè€Œå‡ž®‘聚¼‚¯‚Œæ‰€éœ€çš„VFA量,造成生物除磷效果降低。其‹Æ¡æ˜¯å¿…须在好氧区供给­‘›_¤Ÿçš„溶解氧åQŒä»¥ä¾¿èš¼‚¯‚Œæœ‰æ•ˆåœ°å¸æ”¶æ±¡æ°´ä¸­çš„磷。一般厌氧段的DO要严格控制在0.2mg/L以下åQŒè€Œå¥½æ°§æ®µçš„DO要控制在2mg/L以上ã€?/div> <div> (2)厌氧区硝态æÛåQšç¡æ€æÛ包括¼‹é…¸ç›å’Œäºšç¡é…¸ç›åQŒç¡æ€æÛ的存在会消耗有机基质而抑制聚¼‚¯‚Œå¯¹ç£·çš„释放,˜q›è€Œåª„响好氧条件下聚磷菌对¼‚ïLš„吸收。另外,¼‹æ€æÛ的存在会被部分聚¼‚¯‚Œåˆ©ç”¨è€Œè¿›è¡Œå¼‹åŒ–åQŒä»Žè€Œåª„响聚¼‚¯‚Œçš„释¼‚·å’Œæ‘„磷能力ã€?/div> <div> (3)温度åQšæ¸©åº¦å¯¹é™¤ç£·çš„媄响不如对生物脱æÛ˜q‡ç¨‹çš„媄响那么明显,因äؓ在高温、中温和低温条äšg下,都有不同的具有生物除¼‚¯‚ƒ½åŠ›çš„聚磷菌在‹zÕdŠ¨ã€‚但ä¸ÞZ¿è¯å‘酵作用的完成和基质的吸收åQŒåœ¨ä½Žæ¸©˜qè¡Œæ—Óž¼Œè¦æ±‚厌氧ŒD늚„æ—‰™—´æ›´é•¿ä¸€äº›ã€‚一般来è¯ß_¼Œåœ?[#]~30t的范围内åQŒéƒ½å¯ä»¥æ”¶åˆ°è¾ƒå¥½çš„除¼‚äh•ˆæžœã€?/div> <div> (4)pHå€û|¼šé€šå¸¸æƒ…况下,pH值在6~ [#]的范围内æ—Óž¼Œ¼‚ïLš„释放比较½E›_®šã€‚pHå€ég½Žäº?.5æ—Óž¼Œç”Ÿç‰©é™¤ç£·çš„效果会大大下降ã€?/div> <div> (5)BOD5负荷和有机物性质åQšæ±¡æ°´ç”Ÿç‰©é™¤¼‚·å·¥è‰ÞZ¸­åQŒåŽŒæ°§æ®µæœ‰æœºåŸø™´¨çš„种¾c…R€å«é‡åŠå¾®ç”Ÿç‰©æ‰€éœ€è¥å…»ç‰©è´¨ä¸Žæ±¡æ°´ä¸­å«ç£·çš„比值是影响除磷效果的重要因素。不同的有机物äؓåŸø™´¨æ—Óž¼Œ¼‚ïLš„厌氧释放和好氧摄取效果是不同的。分子量较小的易降解有机ç‰?如挥发性脂肪酸¾cȝ­‰åQ‰å®¹æ˜“被聚磷菌利用,ž®†å…¶ä½“内储存的多聚磷酸盐分解释放出磷åQŒè¯±å¯¼ç£·é‡Šæ”¾çš„能力较强,而高分子éšùN™è§£æœ‰æœºç‰©è¯±å¯¼èšç£·èŒé‡Š¼‚¯‚ƒ½åŠ›å°±è¾ƒå·®ã€‚厌氧阶ŒD늣·çš„释放越充分åQŒå¥½æ°§é˜¶ŒD늣·çš„摄取量ž®Þp¶Šå¤§ã€‚另外,聚磷菌在厌氧阶段释磷所产生的能量,主要用于其吸收低分子有机åŸø™´¨ä»¥ä½œä¸ºåŽŒæ°§æ¡ä»¶ä¸‹ç”Ÿå­˜çš„基¼‹€ã€‚因此,˜q›æ°´ä¸­æ˜¯å¦å«æœ‰èƒö够的有机质,是关¾pÕdˆ°èšç£·èŒèƒ½å¦åœ¨åŽŒæ°§æ¡äšg下顺利生存的重要因素。一般认为,˜q›æ°´ä¸­BOD5/TP要大äº?5,才能保证聚磷菌有­‘›_¤Ÿçš„基质,从而获得理想的除磷效果。äؓ此,可以采用部分˜q›æ°´å’Œè·¨­‘Šåˆæ²‰æ± çš„方法,获得除磷所需要的BOD5量ã€?/div> <div> (6)泥龄åQšç”±äºŽç”Ÿç‰©é™¤¼‚ïL³»¾lŸä¸»è¦é€šè¿‡æŽ’出剩余污惔实现除磷åQŒå› æ­¤å‰©ä½™æ±¡æ³¥é‡çš„多ž®‘决定系¾lŸçš„除磷效果åQŒè€Œæƒ”龄长短对'剩余污惔的排æ”ùN‡å’Œæ±¡æ³¥å¯¹¼‚ïLš„摄取作用有直接的影响。一般来è¯ß_¼Œæ³¥é¾„­‘ŠçŸ­åQŒæ±¡æ³¥å«¼‚·é‡­‘Šé«˜åQŒæŽ’攄¡š„剩余污惔量越大,除磷效果­‘Šå¥½ã€‚短的惔龄还有利于好氧段控制¼‹åŒ–作用的äñ”生,从而有利于厌氧ŒD늣·çš„释放。所以仅以除¼‚·äؓ目的的污水处理系¾lŸï¼Œ-?般都采用较短的惔龄。但˜q‡çŸ­çš„惔龄会影响BOD5和COD&的去除效果,可能å¯ÆD‡´å‡ºæ°´çš„BOD5和COD&å€ÆD¾¾ä¸åˆ°æŽ’放要求。一般以除磷为目的的生物处理¾pȝ»Ÿçš„惔龄控制在3.5~7dã€?/div> <div> (7)其他åQšä¸€èˆ¬æ¥è¯ß_¼ŒåŽŒæ°§ŒD늚„水力停留旉™—´­‘Šé•¿åQŒé™¤¼‚äh•ˆæžœè¶Šå¥½ã€‚但˜q‡é•¿çš„停留时é—ß_¼Œåˆä¸ä¼šæ„å‘³ç€æœ‰æ›´å¤§çš„除磷效果åQŒåè€Œä¼šæœ‰åˆ©äºŽä¸çŠ¶èŒçš„生长,使污泥的沉淀性能恶化。剩余污泥的处理æ–ÒŽ³•ä¹Ÿä¼šå¯šw™¤¼‚äh•ˆæžœäñ”生媄响,在污泥的处理˜q‡ç¨‹ä¸­ï¼Œå¦‚果出现厌氧状态,剩余污惔中的¼‚·å°±ä¼šé‡æ–°é‡Šæ”‘Ö‡ºæ¥ï¼Œä½¿æµ“¾~©æ± ä¸Šæ¸…液和污惔脱水液中含有高浓度的¼‚øP¼Œè€Œè¿™äº›é«˜‹¹“度的含¼‚äh±¡æ°´åˆä¼šå›žåˆ°è¿›æ°´ä¸­ã€?/div> <div> 3.˜qè¡Œ½Ž¡ç†</div> <div>  </div> <div> (1)厌氧ŒD‰|˜¯ç”Ÿç‰©é™¤ç£·æœ€å…³é”®çš„环节,其容¿U¯ä¸€èˆ¬æŒ‰0.5~ 1h的水力停留时间确定,如果˜q›æ°´ä¸­å®¹æ˜“生物降解的有机物含量较高,应当设法减少水力停留旉™—´åQŒä»¥ä¿è¯å¥½æ°§ŒDµè¿›æ°´çš„bod5含量ã€?/div> <div> (2)如果¼‚ïLš„排放标准很高åQŒè€Œæ‰€é€‰é™¤¼‚·å·¥è‰ÞZ¸èƒ½æ»¡­‘›_‡ºæ°´è¦æ±‚,可以增加化学除磷或过滤处理去除水中残留的低含量磷ã€?/div> <div> (3)重力‹¹“羃å®ÒŽ˜“产生厌氧状态,有除¼‚¯‚¦æ±‚的剩余污惔处理不能采用˜q™ç§æ–ÒŽ³•åQŒè€Œåº”当ä‹É用气‹¹®æµ“¾~©ã€æœºæ¢°æµ“¾~©ã€å¸¦å¼é‡åŠ›æµ“¾~©ç­‰ä¸äñ”生厌氧状态的‹¹“羃æ–ÒŽ³•ã€‚如果受条äšg限制只能选用重力‹¹“羃æ—Óž¼Œå¿…须在工艺流½E‹ä¸­å¢žè®¾åŒ–学沉淀设施去除‹¹“羃上清液中所含的¼‚—÷€?/div> <div> (4)泥龄­‘Šé•¿åQŒå¯¹é™¤ç£·­‘Šä¸åˆ©ï¼Œž®¤å…¶æ˜¯åœ¨˜q›æ°´BOD5/TPž®äºŽ20æ—Óž¼Œæ³¥é¾„控制得越短越好。但如果˜q›æ°´BOD5偏低åQŒæ´»æ€§æ±¡æ³¥å¢žé•¿ç¼“慢,ž®×ƒ¸å¯èƒ½ž®†æƒ”龄控制得太短åQŒæ­¤æ—¶å¿…™åÖM‹É用化学法除磷ã€?/div> <br /></div> <div class="clear"></div> </div> <div class="pages" style="text-align:center; margin-bottom:40px;" > <a href="javascript:void(0);" title="˜q”回列表™å? onClick="window.history.go(-1);return false;" onFocus="this.blur()"><img alt="" src="../images/back_03.jpg" /></a> </div> </div> </div> </div> </div> <div class="footer" style="z-index:999"> <div class="foot" 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